Schreiner finish of textile fabrics.



PAUL MOR'ITZ KRAIS,

OF-ILKLEY, ENGLAND.

SCHREINER FINISH OF TEXTILE FABRICS.

Application filed December 16, 1903.

Specification of Letters Patent.

Patented May 18, 1909.

Serial No, 185,468.

;To all whom it may concern:

Be it known that 1, PAUL Momrz KRAIS, a subject of the Emperor of Germany, residing at Ilkley, in the county of York, in the Kingdom of England (whose post-office address is Easby Drive, Ilkley, aforesaid), have invented certain new and useful Imrovements in Schreiner Finish of Textile abrics, for which application has been made in Great Britain, No. 25,463, dated November 21, 1903.

Certain classes of piece goods have for many years been passed between rollers engraved with fine parallel lines in order to give them a silk-like gloss or luster, which is commonly known as Schreiner finish. The

gloss produced by such mechanical means is,

however, fugitive,-being more or less lost when the goods are exposed to a" moist atmosphere, or to rain, or to the tailors iron. For many years past efiorts have been made to render such mechanical finishes permanent, and many processes have been tried, but up to the present time only a very partial success has been obtained. Thoroughly impregnating the materials with varnish or various forms of altered cellulose has been tried, whereby the fabric has been made waterproof. If "this be done before schreinering, a stifi, hard material is the result,- while if it be done after schreinering the efiect of the latter is to a considerable extent the goods should not lost and the color of the material is also changed.

My invention is designedto leave the material almost entirely unaltered in texture and appearance, but yetto render the schreinering permanent, and it consists essentially in treating the surface of the fabric after schreinering with a fluid solution of soluble nitro-cell'ulose in one of the usual solvents, preferably amyl acetate. In place of this solution I may, however, use other cellulose compounds which are soluble in volatile organic solvents, such as acetate of cellulose or other ethers of cellulose or hy-. compounds.

dro-cellulose, or mixtures of the named. i

The solution is applied by spraying the schreinered surface, but it is essential that be substantially stiflened or their appearance materially altered. The solution is preferably applied twice in succession, the solvent being evaporated after each application, but the spraying i should be such as not to form a skin over the fabric or render it waterproof. It should be in fact just sufficient to impregnate each individual fiber of the schreinered surface of the cloth, and thus mechanically fix the produced luster. The result is that moisture will, though it may cause the fibers to swell, not separate them from the position in which they have been laid by the schreinering, While at the same time the appearance of the fabric is unaltered. I obtain the best and most perfect results with mercerized cotton and in order to preserve the full depth of the black I may tint the solution with a suitable dyestuff soluble inthe solvent used.

As an illustration, in carrying out my operation I spray a 5% solution diluted with its own volume of 96% amylacetate on the piece previously schreinered and then evaporate and repeat the operation if necessary. I find the best result is obtained when the respective weights of the cellulose substances remaining in the piece after evaporation and the piece itself are from 0.2% to 5% of the cellulose compound to 100 of the piece.

Having thus described my invention, what I claim is:

1. The process of producing a permanent Schreiner finish on textile materials, which consists in passing the material between rollers engraved with fine parallel lines and then treating the goods with an amylacetate solution of cellulose, the solution being of such strength or dilution that it does not sensibly stiffen or waterproof the material as a whole while practically waterproofing the fibers of the schreinered surface thereof.

2. The process of producing a permanent Schreiner finish on textile materials, which consists in passing the material between rollers engraved with'fineparallel lines; and then treating the surface of the goods with cellulose dissolved in a volatile organic sol vent, the solution being of such strength or .dilution that it does not sensibly stiffen or waterproof the. material as a whole while practically waterproofing the fibers of the schreinered surface thereof.

3. The process of producing a permanent Schreiner finish on textile materials, which consists in passing the material between rollers engraved with fine parallel lines; then repeatedly spraying the goods thus treated with a solution of cellulose dissolved in a pieces which have been dyed anilin black,

volatile organic solvent, the solution being extremely thin; and drying the material between each spraying, whereby the goods are not sensibly stiflened or Water roofed as a wholev while practically the bers of the schreinered surface are waterproofed.

cellulose in amyl-acetate; and finally evaporating the solvent and thereby fixing or ren- I rollers Without waterproofing the material itself.

In witness whereof, I have hereunto signed thepresence of two subscribing witnesses.

PAUL MORITZ KRAIS. Witnesses:

H. O. WADE, BERTRAM .HOWE.

dering permanent the finis'h produced by the my name this 2nd day of December 1903, in 

